Occurrence and distribution of soil Fusarium species under wheat crop in zero tillage

The presence of Fusarium species in cultivated soils is commonly associated with plant debris and plant roots. Fusarium species are also soil saprophytes. The aim of this study was to examine the occurrence and distribution of soil Fusarium spp. at different soil depths in a zero tillage system afte...

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Autores principales: Silvestro, L. B., Stenglein, Sebastián Alberto, Forjan, H., Dinolfo, María Inés, Arambarri, Angélica Margarita, Manso, L., Moreno, M. V.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Naturales
Crop rotation
Cultivated soil
Soil depth
Species diversity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85648
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85648
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Crop rotation
Cultivated soil
Soil depth
Species diversity
spellingShingle Ciencias Naturales
Crop rotation
Cultivated soil
Soil depth
Species diversity
Silvestro, L. B.
Stenglein, Sebastián Alberto
Forjan, H.
Dinolfo, María Inés
Arambarri, Angélica Margarita
Manso, L.
Moreno, M. V.
Occurrence and distribution of soil Fusarium species under wheat crop in zero tillage
topic_facet Ciencias Naturales
Crop rotation
Cultivated soil
Soil depth
Species diversity
description The presence of Fusarium species in cultivated soils is commonly associated with plant debris and plant roots. Fusarium species are also soil saprophytes. The aim of this study was to examine the occurrence and distribution of soil Fusarium spp. at different soil depths in a zero tillage system after the wheat was harvested. Soil samples were obtained at three depths (0-5 cm, 5-10 cm and 10-20 cm) from five crop rotations: I, conservationist agriculture (wheatsorghum- soybean); II, mixed agriculture/livestock with pastures, without using winter or summer forages (wheatsorghum- soybean-canola-pastures); III, winter agriculture in depth limited soils (wheat-canola-barley-late soybean); IV, mixed with annual forage (wheat-oat/Vicia-sunflower); V, intensive agriculture (wheat-barley-canola, with alternation of soybean or late soybean). One hundred twenty two isolates of Fusarium were obtained and identified as F. equiseti, F. merismoides, F. oxysporum, F. scirpi and F. solani. The most prevalent species was F. oxysporum, which was observed in all sequences and depths. The Tukey's test showed that the relative frequency of F. oxysporum under intensive agricultural management was higher than in mixed traditional ones. The first 5 cm of soil showed statistically significant differences (p = 0.05) with respect to 5-10 cm and 10-20 cm depths. The ANOVA test for the relative frequency of the other species as F. equiseti, F. merismoides, F. scirpi and F. solani, did not show statistically significant differences (p ≤ 0.05). We did not find significant differences (p ≤ 0.05) in the effect of crop rotations and depth on Shannon, Simpson indexes and species richness. Therefore we conclude that the different sequences and the sampling depth did not affect the alpha diversity of Fusarium community in this system.
format Articulo
Articulo
author Silvestro, L. B.
Stenglein, Sebastián Alberto
Forjan, H.
Dinolfo, María Inés
Arambarri, Angélica Margarita
Manso, L.
Moreno, M. V.
author_facet Silvestro, L. B.
Stenglein, Sebastián Alberto
Forjan, H.
Dinolfo, María Inés
Arambarri, Angélica Margarita
Manso, L.
Moreno, M. V.
author_sort Silvestro, L. B.
title Occurrence and distribution of soil Fusarium species under wheat crop in zero tillage
title_short Occurrence and distribution of soil Fusarium species under wheat crop in zero tillage
title_full Occurrence and distribution of soil Fusarium species under wheat crop in zero tillage
title_fullStr Occurrence and distribution of soil Fusarium species under wheat crop in zero tillage
title_full_unstemmed Occurrence and distribution of soil Fusarium species under wheat crop in zero tillage
title_sort occurrence and distribution of soil fusarium species under wheat crop in zero tillage
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85648
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